JP5523254B2 - Work place power control device - Google Patents

Description

  The present invention relates to a workplace power control apparatus.

  Of the electricity charges paid by power consumers to the power company, the basic charge paid regardless of the amount of power used is determined in proportion to the size of the contract power. The contract power refers to the maximum power that can be used by the consumer on a contract between the power company and the customer, and is determined based on, for example, the maximum power assumed to be used by the consumer. That is, contract power can be suppressed by reducing the maximum power to be used, and the electricity bill can be reduced. In addition, when the power used exceeds the contracted power, it may be necessary to pay an excess penalty, so it is important to reduce the maximum power consumption.

  For this reason, for the purpose of reducing the electricity bill, for example, a power receiving system has been proposed that reduces the peak received power of facilities with large power consumption fluctuations. This system includes an AC power storage unit composed of a power storage unit and a power conversion unit, a charge control unit that supplies DC power to the power storage unit, and a charge control unit that supplies direct current to the power storage unit during light loads that do not exceed contract power. Controls to supply power from the AC power storage means when the heavy load is likely to exceed the contract power when the load is likely to exceed the contract power. Load connection switching means is provided (for example, see Patent Document 1).

JP 2006-230147 A

  By the way, in recent years, from the viewpoint of reducing environmental load, electrification of construction machines used in construction sites such as battery excavators, battery powered aerial work platforms, and hybrid hydraulic excavators is being promoted. Along with this, the electric power used at the workplace increases, it is necessary to expand the contract electric power, and it is also expected that the electricity bill will be high. Therefore, in order to suppress an increase in the electricity bill, it is desirable to avoid an increase in contract power by reducing the maximum power consumption at the work site.

  However, in the conventional power receiving system as described above, since it is necessary to supplement all the insufficient power corresponding to the peak power exceeding the contract power with the battery, the system is applied to a work place that uses a large number of construction machines with large power consumption. In some cases, it may be necessary to install a large number of large capacity batteries. As a result of arranging a large number of large-capacity batteries in the work place in this way, there is a possibility that the cost will rise. In addition, at present, the power shortage at the work site is mainly compensated by engine-type generators, etc., which increases the environmental load associated with the construction work, and takes time and labor for generator installation and wiring.

  This invention is made | formed in view of the above, Comprising: The amount of electric power supplied to a work place through a power transmission line network from a power station of an electric power company is reduced as needed, without causing a rise in cost. It is an object of the present invention to provide a work place power control apparatus that can perform such a process.

  In order to solve the above-described problems and achieve the object, a work place power control apparatus according to claim 1 is a work place power control apparatus that performs power control of a work place for construction work. Work process information storage means for storing work process information for identifying each work process of construction work performed at a work site, and electric power consumption of electrical equipment for construction work used in each work process at the work shop Power usage information storage means for storing power usage information for specifying, and charging state information for specifying a charging state of a battery provided in the electric appliance from the electric appliance used in the work place Based on the charging state information acquisition means to be acquired, the power usage information stored in the power usage information storage means, and the charging state information acquired by the charging state information acquisition means, Electric When the required amount of power supply is calculated, the necessity of adjustment of the calculated power supply requirement is determined based on a predetermined standard, and it is determined that the adjustment of the required power supply amount is necessary, the power usage of the electric appliance Power adjustment means for performing predetermined control for reducing the amount.

  According to a second aspect of the present invention, there is provided the work place power control apparatus according to the first aspect, wherein the work place power control apparatus stores contract power information for specifying the contract power of the work place. And the power adjustment means has a power supply requirement of the electrical appliance that exceeds the contract power of the workplace based on the power supply requirement and the contract power information stored in the contract power information storage means. If it is determined that the power supply requirement exceeds the contract power, it is determined that the power supply requirement needs to be adjusted.

  Further, the workplace power control apparatus according to claim 3 is the workplace power control apparatus according to claim 1 or 2, wherein the power adjustment means receives a power consumption reduction request from an electric power company. It is determined that it is necessary to adjust the power supply requirement.

  Moreover, the work place power control apparatus according to claim 4 includes a work process change means for changing the work process in the work place power control apparatus according to any one of claims 1 to 3, The power adjustment means changes the work process so as to reduce the power consumption of the electrical appliance via the work process change means as the predetermined control for reducing the power usage of the electrical equipment. Control for.

  Further, the work place power control device according to claim 5 is the work place power control device according to claim 4, wherein the work process information storage means is configured to specify a priority between the work processes. The priority information is stored, and the work process changing means changes the work process based on the priority information stored in the work process information storing means.

  Further, the workplace power control device according to claim 6 is the workplace power control device according to any one of claims 1 to 5, wherein the electrical appliance uses power supplied from a battery. Including heavy machinery that can be driven.

  Moreover, the work place power control apparatus according to claim 7 is the work place power control apparatus according to any one of claims 1 to 6, wherein the power adjustment means includes the power usage amount information and the charge. Based on the state information and the amount of power generated by the natural energy utilization type power generation device arranged at the work site, the amount of power supply to the electrical appliance is calculated.

  According to the workplace power control apparatus according to claim 1, when it is determined that the adjustment of the required power supply amount is necessary, the predetermined control for reducing the power consumption of the electrical appliance is performed. The amount of power supplied from the company power plant to the work site via the transmission line network can be reduced as necessary. As a result, it is possible to avoid the expansion of contract power even when the electrification of construction machinery used at construction sites is promoted. It can also contribute to reducing the amount.

  According to the work place power control apparatus of the second aspect, the power adjustment means determines whether the power supply required amount of the electrical appliance is based on the power supply required amount and the contract power information stored in the contract power information storage means. When it is determined that the contracted power of the work place is exceeded, it is determined that the necessary power supply needs to be adjusted, so the amount of power supplied from the power company power station to the work place via the transmission line network is determined. It is possible to automatically prevent exceeding the contract power. As a result, it is possible to reduce the contract power, so it becomes possible to use low-voltage power reception even in workplaces that previously required high-voltage power reception, and the installation cost of cubicle-type high-voltage power reception equipment for high-voltage power reception Electric power contract costs can be reduced.

  According to the workplace power control apparatus according to claim 3, when the power adjustment means receives the power consumption reduction request from the power company, it determines that the adjustment of the required power supply amount is necessary. It becomes possible to adjust the power according to the power consumption reduction request from the company.

  According to the work place power control apparatus according to claim 4, the power adjustment means uses the power consumption of the electric appliance via the work process changing means as the predetermined control for reducing the electric power consumption of the electric appliance. Since the control for changing the work process is performed so as to reduce the amount, the amount of power supplied to the work place from the power station of the power company via the power transmission line network can be reduced as necessary.

  According to the work place power control apparatus according to claim 5, since the work process changing means changes the work process based on the priority information stored in the work process information storing means, the priority between the work processes. The work process can be changed in consideration of the above. Thereby, it is possible to reduce the amount of electric power supplied to the work place from the power station of the electric power company via the transmission line network while performing the work process with high priority as scheduled.

  According to the work place electric power control apparatus according to claim 6, the electric appliance can be driven using electric power supplied from the battery, such as a battery excavator, a battery type aerial work vehicle, a hybrid hydraulic excavator, a tower crane, and the like. Since heavy machinery is included, when these heavy machinery is not used, the power output from the heavy machinery battery can be supplied to other electrical appliances, and the power company power plant can supply the work site via the transmission line network. The amount of power supplied can be reduced.

  According to the work place power control device according to claim 7, based on the power usage amount information, the charging state information, and the amount of power generated by the natural energy utilization type power generation device arranged at the work place, Therefore, the power supply requirement can be calculated by subtracting the amount of electricity generated by the power generators using natural energy from the amount of electricity consumed by electrical appliances. Therefore, it is possible to reduce the amount of power that needs to be supplied to the work place through the power transmission line network.

It is the block diagram which showed the electrical structure of the workplace electric power control apparatus which concerns on Embodiment 1 of this invention functionally conceptually. It is the table | surface which illustrated the information currently recorded on work process DB. It is the table | surface which illustrated the information stored in electric power consumption DB. It is the table | surface which illustrated the information stored in contract electric power DB13c. It is a flowchart of the electric power plan process performed by the workplace electric power control apparatus. It is the table | surface which illustrated the total table produced | generated in order that an electric power adjustment part may calculate electric power supply required amount. It is a flowchart of a power adjustment process. It is a flowchart of a power control process. It is the schematic which showed the outline | summary of the workplace electric power control apparatus which concerns on Embodiment 2. FIG. 10 is a flowchart of power planning processing according to the second embodiment.

  Embodiments of a workplace power control apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. However, the present invention is not limited to each embodiment.

  The workplace power control apparatus according to each embodiment is for controlling the power of the workplace for construction work. For example, a construction workplace such as a housing complex such as an apartment, a high-rise building, or a commercial facility. It can also be applied to power control of workplaces where various construction works are performed, such as civil engineering workplaces such as roads, dams, and bridges.

[Embodiment 1]
First, the first embodiment will be described. Embodiment 1 is a form in which predetermined control for reducing the amount of power used by an electrical appliance is performed when it is determined that adjustment of the required amount of power supply is necessary. In the following description, the “necessary amount of power supply” refers to the amount of power that needs to be supplied from a power plant of an electric power company to a work site via a transmission line network.

(Constitution)
First, the configuration of the workplace power control apparatus according to Embodiment 1 will be described. FIG. 1 is a block diagram functionally conceptually showing the electrical configuration of the workplace power control apparatus according to the first embodiment.

  As shown in FIG. 1, the work place power control apparatus 10 is installed in the work place 1. In addition to the work place power control device 10, the work place 1 includes a power receiving facility 20, an output adjustment device 30, an electric appliance 40, and a terminal device 50. Among these, the power receiving facility 20 is for receiving, for example, power transmitted from the distribution substation 2 via the power transmission network 3 and supplying power to each electrical appliance 40 via the output adjustment device 30. . The power receiving equipment 20 is a known power receiving equipment such as a cubicle type high voltage power receiving equipment for receiving 3.3 kV to 6.6 kV high voltage power or a power receiving panel for receiving low voltage power of 100 V to 200 V, for example. Can be used. The output adjustment device 30 supplies the electric power received from the power transmission network 3 by the power receiving facility 20 to the electrical appliance 40. Further, the output adjustment device 30 causes surplus power output from a battery (not shown) for supplying power to the electrical appliance 40 to flow backward to the transmission line network 3. The electric appliance 40 is an electric appliance 40 used in the work place 1 where the work place power control apparatus 10 is installed, and is supplied from an onboard battery such as a battery excavator, a battery-operated aerial work vehicle, a hybrid hydraulic excavator, a tower crane, or the like. Heavy machinery, mortar mixers, belt conveyors, high washers, etc. that can be driven using electric power, construction machines that use electrical energy as part or all of their power, electric tools such as welding machines and cutters, lighting equipment, etc. Includes electrical equipment such as blowers. Furthermore, the electrical appliance 40 includes battery facilities provided independently as power sources for construction machines, electric tools, electrical equipment, and the like. The terminal device 50 is connected to the work place power control apparatus 10 via, for example, an in-house LAN 60 (Local Area Network), and inputs / outputs information to / from the work place power control apparatus 10.

(Configuration-workplace power control device)
The work place power control apparatus 10 is a work place power control apparatus 10 that performs power control of the work place 1 for construction work. As shown in FIG. 1, the workplace power control apparatus 10 includes a network interface 11 (hereinafter abbreviated as a network IF), a control unit 12, and a data recording unit 13.

(Configuration-Work place power control device-Network IF)
The network IF 11 is an interface for performing communication with the terminal device 50 via the in-house LAN 60, and is configured as, for example, a network board that performs communication using a predetermined communication standard (for example, Ethernet (registered trademark)). ing.

(Configuration-Work place power control device-Control unit)
The control unit 12 is a control unit that controls the work place power control apparatus 10, and specifically, a CPU, various programs interpreted and executed on the CPU (basic control programs such as an OS, and startup on the OS) And an internal memory such as a RAM for storing programs and various types of data.

  The control unit 12 includes a charge state information acquisition unit 12a, a power adjustment unit 12b, and a work process change unit 12c in terms of functional concept. The charging state information acquisition unit 12a is a charging state information acquisition unit that acquires charging state information for specifying the charging state of a battery provided in the electric appliance 40 from the electric appliance 40. The power adjustment unit 12 b is a power adjustment unit that performs predetermined control for reducing the amount of power used by the electrical appliance 40. The work process changing unit 12 c is work process changing means for changing the work process of the work place 1. Details of processing executed by each component of the control unit 12 will be described later.

(Configuration-Work place power control device-Data recording unit)
The data recording unit 13 is a recording unit that records a program necessary for control by the control unit 12 and various data, and is configured using, for example, a hard disk (not shown) as an external storage device. However, any other recording medium including a magnetic recording medium such as a magnetic disk or an optical recording medium such as a DVD or a Blu-ray disk can be used instead of or together with the hard disk. The data recording unit 13 includes a work process database 13a (hereinafter, the database is abbreviated as DB), a power usage DB 13b, and a contract power DB 13c.

  The work process DB 13a is work process information storage means for storing work process information for specifying each work process of the construction work performed at the work place 1 where the work place power control apparatus 10 is installed. FIG. 2 is a table illustrating information recorded in the work process DB 13a. As shown in FIG. 2, in the work process DB 13a, information corresponding to the items "work zone", "process", "electric appliances used", "nighttime availability", "progress status", and "critical path" are mutually stored. Stored in association. The information stored corresponding to the item “work zone” is information for specifying the work zone in which each work is performed. For example, in the construction work of a building, information for specifying the hierarchy (“5th floor” in FIG. 2, etc.) ), And information for identifying the work area in each layer (“A work area” in FIG. 2) is stored. Information stored corresponding to the item “process” is work process information for specifying the work process (in FIG. 2, “rebar assembly / bar arrangement” or the like). The information stored corresponding to the item “electric appliance used” is information for specifying the electric appliance 40 used in each work process of each work area, and the date and time when each work process is performed (in FIG. 2). Identification information (such as “E001” and “E002” in FIG. 2) that uniquely identifies the electrical appliance 40 to be used for each “7/1 day”, “7/1 night”, “7/2 day”, etc.), and In addition, information indicating the number of electrical appliances 40 used (“1/1”, “2/3”, etc. in FIG. 2) is stored. It should be noted that the date and time when a specific work process is not performed in a specific work area (for example, “7/1 day”, “7/1 night”, “7 / For “day 2”, information indicating that the work process is not performed (“---” in FIG. 2) is stored instead of the name of the electrical appliance 40. Further, among the fractions illustrated in FIG. 2 as information indicating the number of electrical appliances 40 used, the numerator indicates the number of electrical appliances 40 used in the work process, and the denominator is disposed in the work place 1. The total number of electrical appliances 40 is shown. That is, when the information indicating the number of electrical appliances 40 to be used is “2/3”, three electrical appliances 40 are arranged in the work place 1, and two of them correspond to work processes. It shall be used in The information stored corresponding to the item “Night / Night Possible” is information for specifying whether or not each work process is a process capable of working at night. For example, in FIG. “0” is stored when night work is impossible. The information stored corresponding to the item “progress status” is progress status specifying information for specifying the progress status of each work process. For example, a numerical value (in FIG. 2) indicating the number of days of progress or delay of each work process with respect to the schedule. “+1” indicating that the work process is advanced one day ahead of schedule and “0” indicating that the progress status of the work process is as planned are stored. The information stored corresponding to the item “critical path” is information for specifying whether each work process corresponds to a critical path. For example, in FIG. "0" is stored when the path does not correspond to a critical path. “Critical path” is a series of work processes in which the next work process cannot be started unless the previous work process is completed, and the work period from the start to the completion of the work at work site 1 is determined. It means the work process to be performed. Information stored corresponding to each of the items “Night / Night”, “Progress status”, and “Critical path” is set by the work process changing unit 12c in the power adjustment process described later. Used as priority information for identification. Each piece of information stored in the work process DB 13a is input in advance via a known input means, a network (both not shown) or the like, or updated in a power adjustment process described later.

  Returning to FIG. 1, the power usage DB 13 b is power usage information storage means for storing power usage information for specifying the power usage of the electrical appliance 40. FIG. 3 is a table illustrating information stored in the power usage DB 13b. As illustrated in FIG. 3, information corresponding to the items “electric appliance ID”, “electric appliance name”, “voltage”, and “use amount” is stored in association with each other in the power usage DB 13b. The information stored corresponding to the item “electric appliance ID” is identification information for uniquely identifying the electric appliance 40 (for example, “E001” in FIG. 3). The information stored corresponding to the item “electric appliance name” is information for specifying the name of the electric appliance 40 (for example, “tower crane” in FIG. 3). The information stored corresponding to the item “voltage” is information specifying the voltage used by the electrical appliance 40 (eg, “three-phase 200 V” in FIG. 3). The information stored corresponding to the item “use amount” is power use amount information for specifying the power use amount of the electrical appliance 40 (“22.7 kW” or the like in FIG. 3). Each piece of information stored in the work process DB 13a is input in advance via a known input means, a network (all not shown), or the like.

  Returning to FIG. 1, the contract power DB 13 c is contract power information storage means for storing contract power information for specifying the contract power of the work place 1. FIG. 4 is a table illustrating information stored in the contract power DB 13c. As illustrated in FIG. 4, information corresponding to the items “work place ID”, “construction type”, and “contract power (kW)” is stored in association with each other in the contract power DB 13c. The information stored corresponding to the item “work place ID” is information for uniquely identifying the work place 1 (“0001” in FIG. 4). The information stored corresponding to the item “construction type” is information for specifying the type of construction work being performed at the work place 1 (“office” in FIG. 4). The information stored corresponding to the item “contract power (kW)” is contract power information for specifying the contract power of the work place 1 (“600” in FIG. 4). Each piece of information stored in the contract power DB 13c is input in advance via known input means, a network (both not shown), and the like.

(processing)
Next, processing executed by the workplace power control apparatus 10 configured as described above will be described.

(Processing-Power planning process)
FIG. 5 is a flowchart of the power planning process executed by the work place power control apparatus 10 (steps are abbreviated as “S” in the following description of each process). This power planning process is a process for determining whether or not adjustment of the power supply required amount to the electrical appliance 40 is necessary based on a predetermined standard. For example, after the workplace power control apparatus 10 is turned on, a predetermined time every day Will be launched.

  When the power planning process is started, the power adjustment unit 12b acquires each piece of information stored in the work process DB 13a from the work process DB 13a (SA1). In this case, the power adjustment unit 12b may acquire all the information stored in the work process DB 13a of the work place 1, or whether or not the required power supply amount of the work place 1 exceeds the contract power Only information related to a work process scheduled to be performed on a work day (hereinafter, “target day”) to be determined by the power adjustment unit 12b may be acquired from the work process DB 13a.

  Next, the power adjustment unit 12b acquires the power usage information stored in the power usage DB 13b (SA2). In this case, the power adjustment unit 12b may acquire all the information stored in the power consumption DB 13b, or may be used in a work process scheduled to be performed on the target day based on the information acquired in SA1. Only the power usage information corresponding to the electrical appliance 40 may be acquired from the power usage DB 13b.

  Subsequently, the power adjustment unit 12b supplies, to the charging state information acquisition unit 12a, a battery that supplies power to the electrical appliance 40 (an installed battery mounted on the electrical appliance 40 and a battery provided as a power source of the electrical appliance 40). Charge state information for specifying the state of charge (including equipment) is acquired from each electric appliance 40, and the acquired charge state information is acquired from the charge state information acquisition unit 12a (SA3). The charge state information includes, for example, the presence / absence of a battery that supplies power to each electric appliance 40, the remaining battery level when there is a battery that supplies electric power to the electric appliance 40, or the electrification when these batteries are used. The usable time of the device 40 is included. In addition, when the battery is charged during a time period when the work is not performed (for example, at night), the charging state information acquisition unit 12a may charge the battery based on the current remaining battery level, charging time, charging current, and the like. The charge amount may be predicted, and the remaining amount of the battery after the charge amount is charged may be acquired as the charge state information.

  Next, the power adjustment unit 12b supplies power to the electrical appliance 40 based on the information regarding the work process of the work place 1 acquired in SA1, the power usage information acquired in SA2, and the charging state information acquired in SA3. Calculate the required amount (SA4).

  FIG. 6 is a table exemplifying a tabulation table generated by the power adjustment unit 12b in SA4 in order to calculate the required power supply amount. The aggregation table is stored, for example, in the data recording unit 13 (not shown). As shown in FIG. 6, the tabulation table includes items “target date”, “work shop ID”, “electric appliance ID”, “electric appliance name”, “number of units used”, “power consumption (kW)”, Information corresponding to “charge state” and “necessary power supply (kW)” is stored in association with each other. Among these, the information stored corresponding to the item “target date” specifies the work day that is the target for the power adjustment unit 12b to determine whether the power supply requirement of the electrical appliance 40 exceeds the contract power. ("7/1" in FIG. 6). The information stored corresponding to the item “number of used units” is information for specifying the number of electric appliances 40 used in the work place 1 (“1” in FIG. 6). The information stored corresponding to the item “power consumption (kW)” is a total value of the power consumption of the electrical appliance 40 used (“22.7” in FIG. 6). The information stored corresponding to the item “charge state” includes the presence / absence of a battery that supplies power to the electric appliance 40 to be used, and the work on the target day when there is a battery that supplies electric power to the electric appliance 40 This is information for specifying whether or not the power necessary for the process can be covered by the remaining amount of the battery. For example, if there is no battery that supplies power to the electrical appliance 40, the status is “none”. If there is a battery that supplies power to the battery and the power required for the work process can be covered by the remaining amount of the battery, it is “satisfied”. Is not stored with the remaining battery level, “insufficient” is stored. The information stored corresponding to the item “necessary power supply (kW)” is information for specifying the required power supply of the electrical appliance 40 (“632” in FIG. 6). The information stored corresponding to the item “work place ID” is the same as the information stored corresponding to the item “work place ID” in the contract power DB 13c of FIG. The information stored corresponding to the “electric appliance name” is the same as the information stored corresponding to the items “electric appliance ID” and “electric appliance name” in the power consumption DB 13b of FIG.

  The power adjustment unit 12b is stored corresponding to the target date among the information corresponding to the item “electric appliances used” of the work process DB 13a illustrated in FIG. 2 based on the information regarding the work process of the work place 1 acquired in SA1. The total number of units used is identified for each identification information (electrical appliance ID) of the electrical appliance 40 being stored and stored in the aggregation table of FIG. 6 (in the example of FIG. 6, the workplace ID is “7/1” for the target date “7/1”. As for the number of electric appliances 40 used in the work place 1 of “0001”, one electric appliance ID “E001” (tower crane), one electric appliance ID “E002” (elevator), and one electric appliance ID “E003” (high) 3 washer)). Furthermore, the electric power adjustment part 12b totalizes the charge condition for every electric appliance 40 of the working place 1 in a target day based on the charge condition information acquired by SA3. For example, the power adjustment unit 12b determines whether or not there is a battery that supplies power to the electrical appliance 40, and if there is a battery that supplies power to the electrical appliance 40, the power necessary for the work process on the target day is determined by the remaining amount of the battery. 6 is stored, and the specified contents are stored in the tabulation table of FIG. 6 (in FIG. 6, at the work place 1 with the work place ID “0001”, the electrical equipment ID “E001” (tower crane)) And “none” for the electrical appliance ID “E002” (elevator) and “satisfied” for the electrical appliance ID “E003” (high washer)). And the electric power adjustment part 12b calculates the electric power supply required amount to the electric appliance 40 based on the electric power consumption and charge state of the electric appliance 40 which were totaled. For example, the electric power adjustment unit 12b includes an electric appliance 40 that does not have a battery that supplies electric power, and an electric appliance 40 that has a battery that supplies electric power but cannot supply the power necessary for the work process on the target day with the remaining amount of the battery. The required amount of power supply to the electrical appliance 40 is calculated by calculating the sum of the power consumption amounts (“632 kW” in FIG. 6). In addition, it is not necessary to supply electric power from the outside of the electric appliance 40 with respect to the electric appliance 40 that has a battery that supplies electric power and can supply the electric power necessary for the work process on the target day with the remaining amount of the battery. It is excluded from the power supply requirement.

  Returning to FIG. 5, the power adjustment unit 12b determines whether the power supply requirement exceeds the contract power based on the power supply requirement calculated in SA4 and the contract power information stored in the contract power DB 13c. (SA5). That is, the power adjustment unit 12b acquires the contract power of the work place 1 from the contract power DB 13c in FIG. 4 and determines whether the acquired contract power exceeds the power supply requirement calculated in SA4. For example, in the contract power DB 13c of FIG. 4, the contract power corresponding to the work place ID “0001” is 600 kW, whereas according to the tabulation table of FIG. 6, the required power supply amount is tabulated as 632 kW. Therefore, the power adjustment unit 12b determines that the required power supply amount to the electrical appliance 40 exceeds the contract power of the work place 1 by 32 kW.

  Returning to FIG. 5, when the power adjustment unit 12b determines that the power supply requirement exceeds the contract power (SA5, Yes), the power adjustment unit 12b determines that the power supply requirement needs to be adjusted and is electrified. A power adjustment process for reducing the power consumption of the device 40 is executed (SA6). After the power adjustment unit 12b executes the power adjustment process, the control unit 12 ends the power planning process.

  On the other hand, when the power adjustment unit 12b determines that the required power supply amount does not exceed the contract power (SA5, No), it is not necessary to execute the power adjustment process for reducing the power consumption of the electrical appliance 40 And the control part 12 complete | finishes an electric power plan process.

(Processing-Power adjustment processing)
Here, the power adjustment process will be described. The power adjustment process is a process for performing predetermined control for reducing the power consumption of the electrical appliance 40. FIG. 7 is a flowchart of the power adjustment process.

  When the power adjustment process is started, the work process changing unit 12c acquires the progress state specifying information stored in the work process DB 13a (SB1). The work process changing unit 12c acquires the progress state specifying information stored in correspondence with the item “progress state” as illustrated in FIG. 2 from the work process DB 13a, and the number of days of progress or delay of each work process with respect to the schedule. Is identified.

  Next, the work process changing unit 12c determines whether or not each work process in the daytime of the target day includes a process capable of working at night (SB2). That is, the work process changing unit 12c stores the information related to the work process DB 13a illustrated in FIG. 2 among the information on the work process acquired by the power adjustment unit 12b in SA1 of the power planning process in FIG. Based on the information that has been made, whether or not each work process in the daytime of the target day can be worked at night is specified.

  Returning to FIG. 7, as a result of the determination of SB2, if there is a process capable of working at night in each work process in the daytime of the target day (SB2, Yes), the work process changing unit 12c The priority is relatively lower than the work process incapable of performing night work, and control is performed to change the implementation date of the work process in which the night work is possible to night on the target day (SB3). For example, the work process changing unit 12c causes the terminal device 50 to output information indicating that the execution date and time of the work process capable of night work can be changed to night on the target day.

  Further, the work process changing unit 12c updates the work process DB 13a so as to correspond to the change of the work process in SB3 (SB4). For example, the work process changing unit 12c stores, in association with the work process capable of working at night, among the electric appliance IDs stored corresponding to the item “electric appliances used” in the work process DB 13a, corresponding to the daytime of the target day. The electrical appliance ID that is being used is changed to correspond to the night of the target day. Thereby, the electric power consumption in the daytime of a target day can be disperse | distributed at night, and the maximum electric power usage in the daytime can be reduced.

  On the other hand, as a result of the determination of SB2, when there is no process capable of working at night in each work process in the daytime of the target day (SB2, No), the work process change unit 12c is in a progress state among the work processes on the target day. It is determined whether or not there is a work process that is ahead of schedule (SB5). That is, the work process changing unit 12c stores the information related to the work process DB 13a illustrated in FIG. 2 among the information on the work process acquired by the power adjustment unit 12b in SA1 of the power planning process of FIG. Based on the information that has been made, it is determined whether or not there is a work process whose progress state is ahead of schedule among the work processes on the target date.

  Returning to FIG. 7, as a result of the determination of SB5, when there is a work process whose progress state is ahead of schedule among the work processes on the target day (SB5, Yes), the work process change unit 12c displays the progress state. The priority of a work process in which the progress is ahead of schedule is assumed to be relatively lower than that of a work process whose progress status is as planned or whose progress status is behind schedule, and that progress status is higher than planned. For example, control is performed to postpone the work process that has been advanced, for example, the day after the target day (SB6). For example, the work process changing unit 12c causes the terminal device 50 to output information indicating that the execution work on the target date of the work process whose progress state is ahead of schedule should be postponed to the next day of the target date. .

  In addition, the work process changing unit 12c updates the work process DB 13a so as to correspond to the change of the work process in SB6 (SB4). For example, the work process changing unit 12c corresponds to the target date in association with the work process whose progress state is ahead of schedule among the electric appliance IDs stored corresponding to the item “electric appliance used” in the work process DB 13a. Thus, the stored electrical equipment ID is changed to correspond to the next day of the target date. Thereby, the maximum electric power consumption on an object day can be reduced.

  On the other hand, as a result of the determination in SB5, when there is no work process whose progress state is ahead of schedule among the work processes on the target day (SB5, No), the work process changing unit 12c Among these, it is determined whether there is a work process that is not a critical path (SB7). In other words, the work process changing unit 12c stores information corresponding to the item “critical path” in the work process DB 13a illustrated in FIG. 2 among the information regarding the work process acquired by the power adjustment unit 12b in SA1 of the power planning process in FIG. Based on the information that has been made, it is determined whether there is a work process that is not a critical path among the work processes on the target date.

  Returning to FIG. 7, as a result of the determination of SB7, if there is a work process that is not a critical path among the work processes on the target date (SB7, Yes), the work process change unit 12c displays a work process that is not the critical path. The priority is assumed to be relatively lower than the work process corresponding to the critical path, and control is performed to postpone the work process that is not the critical path, for example, to the next day of the target day (SB6). For example, the work process changing unit 12c causes the terminal device 50 to output information indicating that the execution work on the target date of the work process that is not the critical path should be postponed to the next day of the target date.

  In addition, the work process changing unit 12c updates the work process DB 13a so as to correspond to the change of the work process in SB6 (SB4). For example, the work process changing unit 12c is stored in association with a work process that is not a critical path among electric appliance IDs stored corresponding to the item “electric appliances used” in the work process DB 13a, corresponding to the target date. The current electrical equipment ID is changed to correspond to the next day of the target date. Thereby, the electric power consumption on a target day can be reduced.

  After the process of SB4, the power adjustment unit 12b determines whether or not the power supply required amount to the electrical appliance 40 is equal to or less than the contract power based on the information stored in the work process DB 13a updated in SB4. (SB8). That is, based on the information stored in the work process DB 13a updated in SB4, the power adjustment unit 12b totals the number of electric appliances 40 used on the target day after the work process change, and in SA3 of FIG. Based on the acquired state of charge information, the state of charge for each used electrical appliance 40 is tabulated. Then, based on the total number of used electric appliances 40 and the state of charge and the power usage information acquired in SA2 in FIG. 5, the electric appliance 40 that does not have a battery that supplies power and the battery that supplies power are provided. The sum total of the electric power consumption of the electric appliance 40 which cannot cover the electric power required for the work process on the target date with the remaining amount of the battery is calculated. The power adjustment unit 12b uses the calculated total amount of power used as the power supply required amount to the electrical appliance 40. Based on the power supply requirement calculated in this way and the contract power information stored in the contract power DB 13c, the power adjustment unit 12b determines whether the power supply requirement to the electrical appliance 40 is equal to or less than the contract power. To do.

  Returning to FIG. 7, as a result of the determination of SB8, when the power supply required amount to the electric appliance 40 is equal to or less than the contract power (SB8, Yes), the electric power necessary for the electric appliance 40 can be supplied within the contract power range. Then, the control unit 12 ends the power adjustment process and returns to the power planning process of FIG.

  On the other hand, when the power supply required amount to the electrical appliance 40 is larger than the contract power (SB8, No), the work process changing unit 12c determines that the work process changing unit 12c for all the work processes on the target day in the work place 1 It is determined whether or not a study on the change of the work process has been performed (SB9). Specifically, the work process changing unit 12c has confirmed the existence of all work processes whose execution date and time can be changed from the target date when the determination of SB2, SB5, and SB7 has already been performed. It is determined that the study on the change of the work process has been performed for all the work processes on the target day.

  As a result, when all the work processes on the target day at the work place 1 have not been studied regarding the change of the work process (SB9, No), that is, at least the work process changing unit 12c has not yet made the determination of SB5 or SB7. If not, the work process changing unit 12c returns to SB2.

  On the other hand, for all work processes on the target day at the work place 1, when the work process changing unit 12c has studied the change of the work process (SB9, Yes), that is, the work process changing unit 12c is SB2, SB5, and If the determination of SB7 has already been performed, it is assumed that the required power supply amount to the electrical appliance 40 exceeds the contract power even if the work process is changed, and the control unit 12 warns the terminal device 50 that the power is excessive. Information is output (SB10). After the process of SB10, the control unit 12 ends the power adjustment process and returns to the power plan process of FIG.

(Processing-Power control processing)
Next, the power control process will be described. The power control process is performed when power is supplied to a predetermined electrical appliance 40 based on the information stored in the work process DB 13a and a work is performed. When a power consumption reduction request is received from an electric power company, This is a process for adjusting the required power supply amount. FIG. 8 is a flowchart of the power control process. This power control process is started in accordance with the start of work at the work place 1 after the work place power control apparatus 10 is turned on, for example.

  When the power control process is started, the power adjustment unit 12b monitors the amount of power supplied from the transmission line network 3 to the work place 1 (SC1). For example, the power adjustment unit 12 b monitors the amount of power that the output adjustment device 30 of the work place 1 supplies to the electrical appliance 40 of the work place 1 via the output adjustment device 30.

  Subsequently, the power adjustment unit 12b determines whether a power consumption reduction request has been received from the power company (SC2). A request to reduce power consumption is when it is detected that there is a possibility that sufficient power cannot be supplied from the power plant due to an increase in power consumption during peak hours due to the use of air conditioning in summer or troubles in the power plant. It means that an electric power company requests a certain amount of power consumption reduction (for example, power reduction of 10% or more of contract power) from a consumer. Specifically, when the power adjustment unit 12b receives a power consumption reduction request signal from a server device (not shown) of a power company, for example, via a network (not shown), the power adjustment unit 12b receives a power consumption reduction request from the power company. judge. Alternatively, when the user of the work place 1 who has received a power consumption reduction request from the power company by telephone or the like performs an operation input via the terminal device 50, the power adjustment unit 12b It is determined that a power consumption reduction request has been received.

  As a result, when a power consumption reduction request is received from the power company (SC2, Yes), the power adjustment unit 12b determines that adjustment of the power supply required amount to the electrical appliance 40 is necessary, and the power adjustment of FIG. The process is executed (SC3). In this power adjustment process, the power adjustment unit 12b performs the process of each step with the day on which the power adjustment process is being executed as the “target day”. In SB8 of FIG. 7, the power adjustment unit 12b determines whether the power supply required amount to the electrical appliance 40 is equal to or less than the power amount that is limited when the power consumption reduction request is complied with (for example, 90% of the contract power). Determine whether. In other words, the power adjustment unit 12b, based on the information stored in the work process DB 13a after being updated in SB4, each electrical appliance 40 on the target day (the day on which the power adjustment process is executed) after the work process is changed. Are used, and the state of charge for each used electrical appliance 40 is totaled based on the state of charge information acquired in SA3 of FIG. Then, based on the total number of used electric appliances 40 and the state of charge and the power usage information acquired in SA2 in FIG. 5, the electric appliance 40 that does not have a battery that supplies power and the battery that supplies power are provided. The sum total of the power consumption of the electrical appliance 40 that cannot cover the power required for the work process on the target date (the day on which the power adjustment process is executed) with the remaining amount of the battery is calculated. The power adjustment unit 12b uses the calculated total amount of power used as the power supply required amount to the electrical appliance 40. Based on the power supply requirement calculated in this way, the contract power information stored in the contract power DB 13c, and the power consumption reduction request received from the power company, the power adjustment unit 12b calculates the power supply requirement to the electrical appliance 40. Is less than or equal to the amount of power limited when the power consumption reduction request is followed.

  Returning to FIG. 8, after the process of SC3, or in SC2, when the power consumption reduction request is not received from the power company (SC2, No), the power adjustment unit 12b has completed the work of the day at the work place 1. It is determined whether or not (SC4), and the process from SC1 to SC3 is repeated while the work of the day is not completed (No in SC4).

  On the other hand, when the work of the day at the work place 1 is completed (SC4, Yes), the power adjustment unit 12b charges the battery for supplying power to the electrical appliance 40 by the output adjustment device 30 (SC5), and power control The process ends.

(effect)
As described above, according to the first embodiment, when it is determined that the adjustment of the required power supply amount is necessary, the predetermined control for reducing the power consumption of the electrical appliance 40 is performed. It is possible to reduce the amount of power supplied from the station to the work site 1 via the transmission line network 3 as necessary. As a result, it is possible to avoid the expansion of contract power even when the electrification of construction machinery used at construction sites is promoted. It can also contribute to reducing the amount.

  In particular, when the power adjustment unit 12b determines that the power supply requirement of the electrical appliance 40 exceeds the contract power of the work place 1 based on the power supply requirement and the contract power information stored in the contract power DB 13c. Automatically determines that the necessary power supply needs to be adjusted, so that it automatically prevents the amount of power supplied from the power company power plant to the work site 1 via the transmission line network 3 from exceeding the contract power. it can. As a result, it is possible to reduce the contract power, so it becomes possible to use low-voltage power reception even in workplaces that previously required high-voltage power reception, and the installation cost of cubicle-type high-voltage power reception equipment for high-voltage power reception Electric power contract costs can be reduced.

  In addition, when the power adjustment unit 12b receives a power consumption reduction request from the power company, the power adjustment unit 12b determines that the power supply necessary amount needs to be adjusted. Therefore, the power adjustment unit 12b adjusts the power according to the power consumption reduction request from the power company. Can be performed.

  In addition, the power adjustment unit 12b performs a work process so as to reduce the power usage of the electrical appliance 40 via the work process change unit 12c as predetermined control for reducing the power usage of the electrical appliance 40. Therefore, the amount of power supplied from the power company power plant to the work site 1 via the transmission line network 3 can be reduced as necessary.

  In particular, since the work process changing unit 12c changes the work process based on the priority information stored in the work process DB 13a, the work process can be changed in consideration of the priority between the work processes. Thereby, it is possible to reduce the amount of electric power supplied to the work place 1 from the power station of the electric power company via the power transmission network 3 while performing the work process with high priority as scheduled.

  In addition, since the electric appliance 40 includes heavy machinery that can be driven using electric power supplied from the battery, such as a battery excavator, a battery-operated aerial work vehicle, a hybrid hydraulic excavator, a tower crane, etc., these heavy machinery are not used. In addition, the power output from the battery of the heavy machinery can be supplied to other electrical appliances, and the amount of power supplied from the power company power plant to the work site 1 via the transmission line network 3 can be reduced. it can.

[Embodiment 2]
Next, a second embodiment will be described. In the second embodiment, it is necessary to supply power to each of a plurality of workplaces based on the power usage information, the charging state information, and the amount of power generated by the natural energy utilization type power generation device arranged at the workplace. It is a form to calculate the quantity. The configuration of the second embodiment is substantially the same as the configuration of the first embodiment unless otherwise specified. The configuration substantially the same as the configuration of the first embodiment is the same as that used in the first embodiment. The same reference numerals and / or names are attached as necessary, and the description thereof is omitted.

(Constitution)
First, the configuration of the workplace power control apparatus 10 according to the second embodiment will be described. FIG. 9 is a schematic diagram showing an outline of the workplace power control apparatus 10 according to the second embodiment. As shown in FIG. 9, a natural energy utilization type power generation device 70 (“solar cell 70” in FIG. 9) is disposed at the work place 1 in the work place power control apparatus 10 according to the second embodiment, and the output It is connected to the adjustment device 30. In addition, although the case where the solar cell 70 is used as the natural energy utilization type power generation device 70 is illustrated in FIG. 9, it is possible to use any other natural energy utilization type power generation device such as wind power generation or geothermal power generation. it can.

(processing)
Next, processing executed by the work place power control apparatus 10 according to the second embodiment will be described. The power control process according to the second embodiment is the same as the power control process described with reference to FIG.

(Processing-Power planning process)
First, the power planning process will be described. FIG. 10 is a flowchart of the power planning process according to the second embodiment. SD1 to SD3 are the same as SA1 to SA3 in FIG. 5, and SD6 to SD7 are the same as SA5 to SA6 in FIG.

  After acquiring the charge state information in SD3, the power adjustment unit 12b specifies the amount of power generated by the natural energy utilization type power generation device 70 disposed in the work place 1 (SD4). For example, information for specifying the amount of power generated by the natural energy utilization type power generation device 70 disposed in the work place 1 is recorded in the data recording unit 13, and the power adjustment unit 12 b stores the data recording unit 13 in the data recording unit 13. By referring to this, the amount of power generated by the natural energy utilization type power generation device 70 is specified. Further, the power adjustment unit 12b receives weather forecast information (for example, sunshine time, cloud cover, temperature, wind direction, wind speed, etc.) included in the text multiplex broadcast via a known receiving means (not shown), and the weather forecast information. Based on the above, the amount of electric power generated by the natural energy utilization type power generation device 70 may be specified.

  Next, the power adjustment unit 12b is based on the information regarding the work process of the work place 1 acquired in SD1, the power usage information acquired in SD2, the charging state information acquired in SD3, and the generated power amount specified in SD4. Then, the required amount of power supply to the electric appliance 40 is calculated (SD5).

  The power adjustment unit 12b stores information for specifying the amount of power generated by the natural energy utilizing power generation apparatus 70 in addition to the information stored in the aggregation table illustrated in FIG. 6 in the first embodiment. Then, the power adjustment unit 12b calculates the necessary power supply amount to the electrical appliance 40 based on the aggregated power usage amount of the electrical appliance 40, the state of charge, and the amount of power generated by the natural energy utilization type power generation device 70. For example, the electric power adjustment unit 12b includes an electric appliance 40 that does not have a battery that supplies electric power, and an electric appliance 40 that has a battery that supplies electric power but cannot supply the power necessary for the work process on the target day with the remaining amount of the battery. By calculating a value obtained by subtracting the amount of power generated by the natural energy utilization type power generation device 70 from the total amount of power used, the amount of power supply to the electrical appliance 40 is calculated.

(Processing-Power adjustment processing)
Next, power adjustment processing according to Embodiment 2 will be described. However, the power adjustment process according to the second embodiment is the same as that of the first embodiment except for the contents of the process of SB8 in FIG.

  In SB8 of FIG. 7, the power adjustment unit 12b determines whether or not the power supply required amount to the electrical appliance 40 is equal to or less than the contract power based on the information stored in the work process DB 13a after being updated in SB4. In this case, the power adjustment unit 12b includes the electric appliance 40 that does not have a battery that supplies power, and the electric appliance that has a battery that supplies power but cannot supply the power necessary for the work process on the target day with the remaining amount of the battery. A value obtained by subtracting the amount of power generated by the power generation apparatus 70 using the natural energy from the sum of the power consumption of 40 is calculated as the power supply required amount to the electrical appliance 40. Based on the power supply requirement calculated in this way and the contract power information stored in the contract power DB 13c, the power adjustment unit 12b determines whether the power supply requirement to the electrical appliance 40 is equal to or less than the contract power. To do.

(effect)
As described above, according to the second embodiment, based on the power usage amount information, the charging state information, and the amount of power generated by the natural energy utilization type power generation device 70 arranged in the work place 1, to the electrical appliance 40. Therefore, a value obtained by subtracting the amount of power generated by the power generation device 70 using the natural energy from the amount of power used by the electrical appliance 40 can be calculated as the power supply required amount. It is possible to reduce the amount of power that needs to be supplied to the work place 1 via the power transmission line network 3 from the place.

[Modifications to each embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention are arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. be able to. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.

(About distribution and integration)
Further, each of the electrical components described above is functionally conceptual and does not necessarily need to be physically configured as illustrated. In other words, the specific form of distribution / integration of each part is not limited to the one shown in the figure, and all or a part thereof may be functionally or physically distributed / integrated in arbitrary units according to various loads and usage conditions. Can be configured.

(About power adjustment processing)
In each of the above-described embodiments, the case where the control for changing the execution date and time of the work process in units of days is described as an example in the power adjustment processing. However, the work process is performed in units shorter than the day (for example, time units). The implementation date and time may be changed.

  Further, in the power adjustment process of FIG. 7, when the required power supply amount to the electrical appliance 40 is larger than the contract power (SB8, No), the work process is changed for all work processes on the target day at the work place 1. When the part 12c has studied the change of the work process (SB9, Yes), the power supply required amount to the electrical appliance 40 exceeds the contract power even if the work process is changed. 12 explained that the terminal device 50 outputs information for warning of excess power (SB10). However, the battery is transferred from another work place or battery supply place to the work place 1, and the electric power is supplied from the battery to the electric appliance 40. You may make it supply.

(About power generator)
In the above-described second embodiment, the case where the natural energy utilization type power generation device 70 is provided has been described as an example, but instead of the natural energy utilization type power generation device 70 or together with the natural energy utilization type power generation device 70, A power generation device such as a fuel cell or a cogeneration system may be connected to the output adjustment device 30 to supply power to the electrical appliance 40.

DESCRIPTION OF SYMBOLS 1 Work place 2 Distribution substation 3 Transmission line network 10 Work place electric power control apparatus 11 Network IF
DESCRIPTION OF SYMBOLS 12 Control part 12a Charging state information acquisition part 12b Electric power adjustment part 12c Work process change part 13 Data recording part 13a Work process DB
13b Electricity consumption DB
13c Contract power DB
20 Power receiving equipment 30 Output adjustment device 40 Electric appliance 50 Terminal device 60 In-house LAN
70 Natural energy-based power generator, solar cell

Claims (7)

A work place power control device for controlling work place power for construction work,
Work process information storage means for storing work process information for specifying each work process of construction work performed at the work site;
Power usage information storage means for storing power usage information for specifying the power usage of electrical equipment for construction work used in each work process of the workplace;
Charging state information acquisition means for acquiring charging state information for specifying the charging state of a battery provided in the electric appliance from the electric appliance used in the workplace;
Based on the power usage information stored in the power usage information storage means and the charging status information acquired by the charging status information acquisition means, the power supply required amount to the electrical appliance is calculated, When it is determined whether or not the calculated power supply necessary amount needs to be adjusted based on a predetermined standard, and it is determined that the power supply necessary amount needs to be adjusted, a predetermined amount for reducing the power consumption of the electrical appliance is determined. Power adjustment means for performing control,
Work place power control device. Contract power information storage means for storing contract power information for specifying contract power of the work place,
The power adjusting means includes
Based on the power supply requirement amount and the contract power information stored in the contract power information storage means, it is determined whether or not the power supply requirement amount of the electrical appliance exceeds the contract power of the work place, and the power supply When it is determined that the required amount exceeds the contracted power, it is determined that adjustment of the power supply required amount is necessary.
The workplace power control apparatus according to claim 1. The power adjusting means includes
When receiving a power consumption reduction request from an electric power company, it is determined that adjustment of the power supply requirement is necessary.
The workplace power control apparatus according to claim 1 or 2. A work process changing means for changing the work process;
The power adjusting means includes
As predetermined control for reducing the amount of electric power used by the electrical appliance, the control for changing the work process is performed via the work process changing means so as to reduce the amount of power used by the electrical equipment.
The workplace power control apparatus according to any one of claims 1 to 3. The work process information storage means includes
Storing priority information for identifying priorities between the work steps;
The work process changing means is
Changing the work process based on the priority information stored in the work process information storage means;
The workplace power control apparatus according to claim 4. The electric appliance includes a heavy machine that can be driven using electric power supplied from a battery.
The workplace power control apparatus according to any one of claims 1 to 5. The power adjustment means needs to supply power to the electrical appliance based on the power usage information, the charging state information, and the amount of power generated by a natural energy utilization type power generation device arranged at the work place. Calculate the quantity,
The workplace power control apparatus according to any one of claims 1 to 6.

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